ascidian
any solitary or colonial tunicate of the class Ascidiacea, exhibiting in the larval stage the vertebrate characteristics of a notocord and hollow nerve cord.
belonging or pertaining to the class Ascidiacea.
Origin of ascidian
1Words Nearby ascidian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use ascidian in a sentence
They pass through peculiar phases of development, the young ascidian appearing like a tadpole-body.
Castle77 observed and studied the phenomenon of self-sterility in an ascidian, Ciona intestinalis, which is hermaphroditic.
The Organism as a Whole | Jacques LoebNow this new organisation is not that of a branchial apparatus but represents a very small but complete ascidian (Fig. 13).
The Science and Philosophy of the Organism | Hans DrieschAppendicularia is a curious little ascidian, differing from all the others in its possession of a tail.
Thomas Henry Huxley; A Sketch Of His Life And Work | P. Chalmers MitchellHe pointed out also that the "notochord" was confined to the tail of the ascidian larva.
Form and Function | E. S. (Edward Stuart) Russell
British Dictionary definitions for ascidian
/ (əˈsɪdɪən) /
any minute marine invertebrate animal of the class Ascidiacea, such as the sea squirt, the adults of which are degenerate and sedentary: subphylum Tunicata (tunicates)
ascidian tadpole the free-swimming larva of an ascidian, having a tadpole-like tail containing the notochord and nerve cord
of, relating to, or belonging to the Ascidiacea
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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